Calender-roll grinder.



W. A. UNDEHWUODVe L ZIMMERIVIAN.

CALENDER BQLL GRINDER.

APPLlATloN FILED MAR.23. 1911.

. a raam W w. A. 'uNuERwooo vm. ZIMMERMAN.

lfcAL'ENnER' ROLL GRINDER. I APPLICATION FILED MAR.23.,I9II.

I Patented Feb. 5,1918

Jaaa@ zwerm y WILLIAM a. nivnnnwoon, or WORCESTER, ann JOHN ZIMMERMAN, or AUBURN;

' j MASSACHUSETTS.'

i cALENnER-ROLL Gmnnnn.

Specification of Letters Patent.

I Application filed March 23, 1917. Serial No. 157,038..

To all whom t may concern:

Be it known that we, WILLIAM A. UNDER- woon and J oHN ZIMMERMAN, citizens of the United lStates, residing at Worcester and Auburn, respectively, in the county of' Worcester and State of Massachusetts, have invented a new and useful Calender-Pell Grinder, of which the following is a. specification.

This inventionrelates to a traverse grinding device, especially for use in the grinding of calender rolls without removing theml which will not be liable to get out of order,

providing a self-contained power unit, and a wheel truing device. j

Other objects and advantages of the invention will appear hereinafter.

' Reference is to be had to the accompanying drawings in which Figure 1 is an end elevation of a calender with a preferred embodiment of this invention applied thereto;

i Fig. 2 is a rear elevation of the grinding device removed from the calender and shown on a larger scale; Fig. 3 is a plan of the same;

Fig. 4 is a. side view;

Fig. 5 is a similar view illustrating the reversal of the wheel; y

Fig. 6 is a rear elevation of a modified form;

Fig. 7 is a side view of the same, and

Fig. 8 is a sectional view on the line 8 8 of Fig. 6.

The invention is intended to be applied to a calender having frame ends A and calender rolls B to be ground. The frame is provided with series' of bolt holes on its two opposite ends and. two brackets 10 are bolted thereto so as to support the apparatus in the proper position for grinding a roll. I

Tn the form of the invention shown-1n the first five figures there is a set of bolt holes for each calender roll and the device is set in a securing the frame in position and also for adjusting it.

The frame 12 'extends clear across the cal- Fatented Feb. 5, 191B..

ender and is provided with longitudinal ways on which a slide 14 is adapted to move. This slide itself also is provided with transverse ways onjwhich is slidably mounted a motor frame 15. This frame 15` is adjusted.

backend forth by a hand operated adjustingscrew 16 as will he obvious. This frame has an arm at one end -overlianging the parts above described and adapted to :extend inside the ends A of the calender tward the calender rolls B. It rests at the rear of the* arm on pla-ned surfaces on the slide and on its other side it supports an electric motor,

be brought up to proper position to grind a calender roll by the mere adjustment of the screw 16. A

0n the end of the frame 12 is a shaft A23 provided with a cone pulley 24. and a gear 25. .This gear is connectedby suitable gearing with a traverse screw26 and is designed to operate it, the cone pulley being driven from an external source of power preferably. This screw is connected with the frame 12 by a half nut 27 which is operated by a liandie 28 to bring it'into or out of engagement with the screw, at any given point along the' traverse, whereby the rotation of the screw will'feed the slide 14 along the frame. On the end of the frame 12 is a pivotcd arm 30 supporting certain of thc gears'andv adjustable about the center of tliesrew '26 to bringr either one of a pair of gears 31 into mesh with the gear 25 so as-to congol the direction of rotation of the screw 26, as will be obvious. The half nut can be thrown out when the screw is to be reversed. This arm is adapted to be fixed in its two eXtreme positions by a spring-pressed pin 32 operated by a handle 33.

'On the arm 15 we have shown a wheeltruing device mounted on a bracket 35 carried by the arm and having aftransverse slide 36 carried in ways thereon :and operated by a screw 37 L. On this'slide is a, screw 38, and a hand wheel for operating it. The

` screw carries a diamond point 39 adaptedto` sired, be kept inposition on the frame 'or applied to it only when it is to be vput Into 35 'the same. Integral oil wells41 are shown for the shaft I having end openings. i Ity will be'seen that with this construction a small grinding wheel can beemployed and .adjusted .up to the work ina very simplev 2.0'. and convenient manner, and also that it can be driven at a high speed by the motor' and that the traversing arrangement 1s independent of the rwheel-truing connections' and (is, hand controlled. By doing away `'lfhe reduction in the siz'e of the wheel is.

an important featurein this. art because the' SO'ordinary large wheel cannot be supported in such a way asto run ata good cutting speed ,without chatteringwhile the' small j wheel can be ,run up to 2100 thisgiving bettercuttingfaction and agreater speedy-of r. operation.

In the form shownin the last three lig- Lures, the device is `mounted in the same way but "the frame 12 is provided with end uprights 42 which support a drivinggshaft 43.- This driving shaft is operated from an eX- ternalsource of power by a belt on la pulley 44,.thus eliminating the motor shown in the other' figures. The frame. 12 is provided with the screw 26 shown in the other igures,l and connected in the same way with aslide 45 traveling on ways'onthe frame .12.

This slide is-provided with a pulley 46 which slides with it and is yadaptedtoengage two intermittent keys 47 on opposite 50 sides of the Shaft 43 so that it will rotate with that shaft in all positions of the slide. Pivtally mounted` on this slide concentric with the shaft 43 is. a' frame 48 having an inwardly extending arm 49 bolted theretol The slide is provided with a rotary worm 50 operated by a handle 51 and meshing with a segmental worm gear 52 Xed 'on the frame 48.. B y turning this worm 50 therefore, the

arm 49 ca-n be raised and loweredl about the center of the shaft 43 as a pivot. l

-Thev pulley 46 .is adapted to transmit power by a belt to a pulley 53 on ashaft 54 carried by the ,arm'49 and carrying the grinding wheel 21. The arm 49alsc supports aiwheel-truing device 55 similar to the with -'the old'chain, traversing device and the combination of aslide, means for mov-- one shown inthe other figures, but located above the -armA and somewhat simplified. This device operates ina n'laiinersubstanJ tially the same as the'otherexcept that the power for driving the wheel is derived 70 through theshaft 43 from an external Source andthe ar'm49 can be set at different angles so as to grind' two calender rolls from one position of fraine 12.'

Although we have illustrated and' de s cri'bed only two forms of the invention we are aware of the fact that other modifications canbe made therein'without departing from the' scope of the invention as expressed in the'cl'aims. Therefore we do not 80 wish to be limited to all the details of construction hereinshown and described, but what we do claim is :Je 7 l. In a portable calender roll grinder, the combination ofa frame-adapted to be apl plied directly to the end housings of a calender at different elevations, an arm carried `bysaid frame and adapted to project in between` the end housings of the calender frame, means on the framefor adjusting said arm so as to bring it into proper relation to the calender rolls, 4a shaft located at each end .of said arm, ya grindingwheel on one shaft and means for 'driving it on the other, ascrew carried by said frame and connected with said arm, and means independent of said driving means for'rotating said screw to, move the arm back and forth.

2. In a portable calender roll grinder, l ing said slide by power asa whole back and forth longitudinally, a motor frame carried l by said slide having an arm extending inwardly, means for adjusting said motor frame transverselyon the slide, a grinding wheel lcarried at 'the end of said arm, amotor mounted on said motor frame over said slide' so as to be centrally supported thereby,

vand means movable as a whole with the motor Aframe for driving said grinding ,wheel from said motor.

3. In a portable calender roll rinder', the combination of a slide, means or moving said slide by power asy a whole. back and forth longitudinally, a frame carried by said slide and having an arm eXtendin in- 4 wardly, means for adjusting said frame and arm transversely, a grinding wheel carried at the end of said arm, a motor mount/ed on the frame over said slide so as to be centrally supported thereby, means for driving said grinding wheel from saidmotor, a longitudinal screw supported by the 1 frame, means independent ofsaid motor for rotating said screw, and means on said frame 125 for engaging the screw whereby the rotation of the screw will move the arm longitudinally.

4. In' a' calender .roll grinder, the combination of a slide, means for moving said slide by pow-er as4 a, Whole hack and forth driving seid grinding Wheel from said longitudinally, aframe carried bynsaidslide motor, and hand controlled change speed 10 i .and having 'an arni extending `lnwardly, gearing for moving the slide. ineither d1- means for Aadjuetigng said frame .and arm reetion.

4transversely-'o'n the s 1ide a' grinding Wheel. a In testimony whereof We have hereuntocarriedv atkhegend of said' Aarm, a Vniotor afiixed our'signatures,l

i 'mountedon the frame over said' slide so as i WILLIAM A.UNDERWOO`D.

t0 be centrally Supported thereby, means for JOHN ZIMMERMAN. f 

